Bob Kerrey’s political career spanned four years as the governor of Nebraska and another 12 as a United States senator from that state, during which he made a serious bid for the Democratic presidential nomination. In all that time, to the best of his memory, he never uttered what has become a routine postscript to political remarks: “God bless America.”

That was deliberate.

“It seems a little presumptuous, when you’ve got the land mass and the talent that we do, to ask for more,” he told me recently.

But there was an additional reason he didn’t mention God, so commonly praised in the halls of government, so prevalent a fixture in public discourse.

“I think you have to be very, very careful about keeping religion and politics separate,” Kerrey said.

We Americans aren’t careful at all. In a country that supposedly draws a line between church and state, we allow the former to intrude flagrantly on the latter. Religious faith shapes policy debates. It fuels claims of American exceptionalism.

And it suffuses arenas in which its place should be carefully measured. A recent example of this prompted my conversation with Kerrey. Last week, a fourth-year cadet at West Point packed his bags and left, less than six months shy of graduation, in protest of what he portrayed as a bullying, discriminatory religiousness at the military academy, which receives public funding.

The cadet, Blake Page, detailed his complaint in an article for The Huffington Post, accusing officers at the academy of “unconstitutional proselytism,” specifically of an evangelical Christian variety.

On the phone on Sunday, he explained to me that a few of them urged attendance at religious events in ways that could make a cadet worry about the social and professional consequences of not going. One such event was a prayer breakfast this year at which a retired lieutenant general, William G. Boykin, was slated to speak. Boykin is a born-again Christian, and his past remarks portraying the war on terror in holy and biblical terms were so extreme that he was rebuked in 2003 by President George W. Bush. In fact his scheduled speech at West Point was so vigorously protested that it ultimately had to be canceled.

Page said that on other occasions, religious events were promoted by superiors with the kind of mass emails seldom used for secular gatherings.

“It was always Christian, Christian, Christian,” said Page, who is an atheist.

Mikey Weinstein, an Air Force Academy graduate who presides over an advocacy group called the Military Religious Freedom Foundation, told me that more than 30,000 members of the United States military have been in contact with his organization because of concerns about zealotry in their ranks.

More than 150 of them, he said, work or study at West Point. Several cadets told me in telephone interviews that nonbelievers at the academy can indeed be made to feel uncomfortable, and that benedictions at supposedly nonreligious events refer to “God, Our Father” in a way that certainly doesn’t respect all faiths.

Is the rest of society so different?

Every year around this time, many conservatives rail against the “war on Christmas,” using a few dismantled nativities to suggest that America muffles worship.

Hardly. We have God on our dollars, God in our pledge of allegiance, God in our Congress. Last year, the House took the time to vote, 396 to 9, in favor of a resolution affirming “In God We Trust” as our national motto. How utterly needless, unless I missed some insurrectionist initiative to have that motto changed to “Buck Up, Beelzebub” or “Surrender Dorothy.”

We have God in our public schools, a few of which cling to creationism, and we have major presidential candidates — Rick Perry, Michele Bachmann, Rick Santorum — who use God in general and Christianity in particular as cornerstones of their campaigns. God’s initial absence from the Democratic Party platform last summer stirred more outrage among Americans than the slaughter in Syria will ever provoke.

God’s wishes are cited in efforts to deny abortions to raped women and civil marriages to same-sex couples. In our country God doesn’t merely have a place at the table. He or She is the host of the prayer-heavy dinner party.

And there’s too little acknowledgment that God isn’t just a potent engine of altruism, mercy and solace, but also, in instances, a divisive, repressive instrument; that godliness isn’t any prerequisite for patriotism; and that someone like Page deserves as much respect as any true believer.

Kerrey labels himself agnostic, but said that an active politician could get away with that only if he or she didn’t “engage in a conversation about the danger of religion” or advertise any spiritual qualms and questions.

“If you talk openly about your doubts,” he said, “you can get in trouble.”